I'm writing this post today because I recently purchased an S6 from a shop that had its IMEI repaired without knowing. The two major problems I experienced with the phone was a damaged DRK (Device Root Key) and wifi passwords not being remembered after reboots. The solution for forgotten wifi passwords turns out to be fairly simple so I will document here... This should also work on other devices that have similar issue.
First your device will need to be rooted.
Several suggested solutions recommend setting ro.secure.storage=false to work around the issue. This is a work around not a solution.
The problem is caused by having damaged ss_data (secure storage data) inside your devices EFS partition.
To repair this issue backup EFS partition with TWRP and make sure a copy resides on your PC. Then use a root file explorer to delete ss_data in /efs. Reboot, fill in wifi settings, reboot again and prosper.
I found the solution here:
http://ift.tt/1TRbBPW
First your device will need to be rooted.
Several suggested solutions recommend setting ro.secure.storage=false to work around the issue. This is a work around not a solution.
The problem is caused by having damaged ss_data (secure storage data) inside your devices EFS partition.
To repair this issue backup EFS partition with TWRP and make sure a copy resides on your PC. Then use a root file explorer to delete ss_data in /efs. Reboot, fill in wifi settings, reboot again and prosper.
I found the solution here:
http://ift.tt/1TRbBPW
from xda-developers http://ift.tt/1RDhLwQ
via IFTTT
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